arm-bsp:corstone1000: Create a standalone corstone1000-a320-fvp machine

Add `corstone1000-a320-fvp` as a dedicated machine instead of enabling
the Cortex-A320 variant through a kas overlay on `corstone1000-fvp`.

Move the A320-specific machine features, overrides, FVP executable
selection, and Ethos-U85 configuration into the new machine
configuration. Keep the generic `corstone1000-fvp` machine focused on
the base FVP platform.

Update the A320 kas to use `corstone1000-a320-fvp` directly, and
allow pregenerated SSH host keys for the new virtual machine.

Signed-off-by: Alex Chapman <alex.chapman@arm.com>
Signed-off-by: Hugues KAMBA MPIANA <hugues.kambampiana@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

ci/corstone1000-a320-fvp.yml

@@ -2,8 +2,7 @@
 
 header:
   version: 14
+  includes:
+    - ci/corstone1000-fvp.yml
 
-local_conf_header:
+machine: corstone1000-a320-fvp
-  a320: |
-    MACHINE_FEATURES += "cortexa320"
-    OVERRIDES .= ":cortexa320"

kas/corstone1000-a320-fvp.yml

@@ -0,0 +1,22 @@
+header:
+  version: 14
+  includes:
+    - kas/corstone1000-base.yml
+    - kas/corstone1000-image-configuration.yml
+    - kas/corstone1000-firmware-only.yml
+    - kas/fvp-eula.yml
+
+env:
+  DISPLAY:
+  WAYLAND_DISPLAY:
+  XAUTHORITY:
+
+local_conf_header:
+  testimagefvp: |
+    IMAGE_CLASSES += "fvpboot"
+
+  mass-storage: |
+    # Ensure the Mass Storage device is absent
+    FVP_CONFIG[board.msd_mmc.p_mmc_file] = "invalid.dat"
+
+machine: corstone1000-a320-fvp

meta-arm-bsp/conf/machine/corstone1000-a320-fvp.conf

@@ -0,0 +1,17 @@
+#@TYPE: Machine
+#@NAME: corstone1000-a320-fvp machine
+#@DESCRIPTION: Machine configuration for Corstone1000 64-bit FVP with A320 CPU
+
+require conf/machine/include/corstone1000-a320.inc
+require conf/machine/corstone1000-fvp.conf
+
+# Ethos-U85 FVP configuration
+ETHOSU_NUM_MACS ?= "256"
+FVP_CONFIG[host.ethosu.num_macs] = "${ETHOSU_NUM_MACS}"
+
+# Reuse FVP recipe overrides
+MACHINEOVERRIDES .= ":corstone1000-fvp"
+
+# Override FVP executable provider and executable name.
+FVP_PROVIDER:corstone1000-a320-fvp ??= "fvp-corstone1000-a320-native"
+FVP_EXE:corstone1000-a320-fvp = "FVP_Corstone-1000-A320"

meta-arm-bsp/conf/machine/corstone1000-fvp.conf

@@ -6,9 +6,6 @@ require conf/machine/include/corstone1000.inc
 require ${@bb.utils.contains('MACHINE_FEATURES', 'corstone1000-extsys', \
     'conf/machine/include/corstone1000-extsys.inc', '', d)}
 
-require ${@bb.utils.contains('MACHINE_FEATURES', 'cortexa320', \
-    'conf/machine/include/corstone1000-a320.inc', '', d)}
-
 TFA_TARGET_PLATFORM = "fvp"
 
 TFM_PLATFORM_IS_FVP = "TRUE"
@@ -24,9 +21,7 @@ DEFAULT_TEST_SUITES:append = " fvp_boot fvp_devices"
 
 # FVP Config
 FVP_PROVIDER ?= "fvp-corstone1000-native"
-FVP_PROVIDER:cortexa320 ?= "fvp-corstone1000-a320-native"
 FVP_EXE ?= "FVP_Corstone-1000"
-FVP_EXE:cortexa320 = "FVP_Corstone-1000-A320"
 FVP_CONSOLES[default] = "host_terminal_0"
 FVP_CONSOLES[tf-a] = "host_terminal_1"
 FVP_CONSOLES[se] = "secenc_terminal"

meta-arm-bsp/conf/machine/include/corstone1000-a320.inc

@@ -1,3 +1,4 @@
-ETHOSU_NUM_MACS ?= "256"
+# Cortex-A320 variant of the Corstone-1000 platform.
-
+MACHINEOVERRIDES =. "corstone1000-a320:"
-FVP_CONFIG[host.ethosu.num_macs] = "${ETHOSU_NUM_MACS}"
+MACHINE_FEATURES += "cortexa320"
+OVERRIDES .= ":cortexa320"

meta-arm-bsp/recipes-connectivity/ssh-pregen-hostkeys/ssh-pregen-hostkeys_%.bbappend

@@ -1,6 +1,7 @@
 # These machines cannot run in product as they are virtual
 # platforms, so allow ssh-pregen-hostkeys to be used.
 
-COMPATIBLE_MACHINE:corstone1000-fvp = "corstone1000-fvp"
+COMPATIBLE_MACHINE:corstone1000 = "corstone1000-fvp"
+COMPATIBLE_MACHINE:corstone1000:cortexa320 = "corstone1000-a320-fvp"
 COMPATIBLE_MACHINE:fvp-base = "fvp-base"
 COMPATIBLE_MACHINE:sbsa-ref = "sbsa-ref"